Malicious PDF — malware analysis report

Heuristics 5

• PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
  PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
• Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
  Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
• Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
  PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• Embedded URL info EMBEDDED_URL
  One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
  URL https://ttraff.ru/123?keyword=the+art+of+invisibility In PDF document text

  • https://nulivoji.weebly.com/uploads/1/3/4/3/134343303/8572092.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/ccfa8fba-f292-4c1b-a52a-595603440b1b/34011337824.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/129a7256-3e69-4d71-828b-51439c6efba6/3251681511.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3f2a1014-6987-4f8c-8a73-b9fdc5d16a34/417157654.pdfIn PDF document text
  • https://s3.amazonaws.com/votuweroxigezog/recover_google_password.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d35d3597-063c-4f54-acd5-db5ff169b426/pewalijo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f3b99493-0a2f-4063-b533-eae0b9c3ef9d/the_oxford_handbook_of_event_related.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8bd9232d-30a0-493b-9aa7-652409b730d4/dikug.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5fefc71a-43f5-4acc-8043-7a752eaf7f17/54040927731.pdfIn PDF document text
  • https://s3.amazonaws.com/zetare/wizevivulosupitopopiku.pdfIn PDF document text
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
  • http://purl.org/dc/elements/1.1/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • http://scripts.sil.org/OFLIn PDF document text

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